OBJECTIVETo understand the distributions of waist circumference and waist-to-height ratio (WHtR) in Han and Uygur ethnic children aged 3-9 years in Xinjiang Uygur Autonomous Region (Xinjiang) and discuss their values in obesity screening in children.

METHODSStratified cluster random sampling was conducted to select Han and Uygur ethnic children from kindergartens and primary schools in four areas of Xinjiang in April 2014. The children's standing height, body weight and waist circumference were measured by trained investigators according to standard protocol. WC>or=P80 and WHtR>or=0.48 were used as the cutoff value for abdominal obesity screening in children with normal BMI. The association between overweight/obese prevalence rate and obesity related indicators, such as BMI, WC, WHtR, were analyzed.

RESULTSA total of 4024 Han and Uygur ethnic children were investigated, in which 2461 were in Han ethnic group, 1563 were in Uygur ethnic group. The WC and WHtR at P50 and P80 were differed significantly. In both Han and Uygur ethnic groups, there were some children with WC>or=P80 or WHtR>or=0.48, although they had normal BMI. This proportion decreased with age.

CONCLUSIONSThe WC and WHtR are similar in Han and Uygur ethnic children aged 3-9 years. WC and WHtR have values in obesity screening for children with normal BMI which suggested to use it as the supplementation of BMI in obesity screening in preschool aged children.

Body Height ; Child ; Child, Preschool ; China ; epidemiology ; Ethnic Groups ; Humans ; Mass Screening ; Obesity, Abdominal ; Overweight ; ethnology ; Pediatric Obesity ; ethnology ; Prevalence ; Schools ; Waist Circumference ; Waist-Height Ratio

BACKGROUND: Recently, childhood obesity has increased and became a major health concern in Korea. The aim of this study is to measure the prevalence of childhood obesity in rural city and to explore the risk factors of obesity including obesity of parents. METHODS: We made 13 convenience samples of elementary school and attached kindergarten located in Asan-city, ChungNam, in 2001. We surveyed children's height, weight, and risk factors of childhood obesity with a self-recorded questionnaire answered by parents. Children's obesity was evaluated by ideal body weight which is defined as the 50th percentile of weight for Korean children of the same height and sex in 1998. The criteria of parents' obesity was over 25 of BMI. RESULTS: The subjects were 1,558 children among 1870 respondents. The prevalence of childhood obesity was 9.4% and that of male children was 11.0% and that of female children was 7.9%. The older in both male and female, the higher the obesity prevalence was. Mother's age were significantly higher in obese children. Birth weight and family income were also significantly higher in obese children. There was a higher family history of obesity in obese children. Risk factors associated with childhood obesity were gender, age of child, mother's age, birth weight, number of siblings, family income, and family history of obesity. CONCLUSION: The prevalence of childhood obesity in Asan-city was 9.4%. Children whose father, mother, or parents were obese tended to be obese.
Birth Weight ; Child ; Chungcheongnam-do* ; Surveys and Questionnaires ; Fathers ; Female ; Humans ; Ideal Body Weight ; Korea ; Male ; Mothers ; Obesity* ; Parents ; Pediatric Obesity* ; Prevalence* ; Risk Factors* ; Siblings

The purpose of this study is to examine the relationships among body composition, dietary intake, exercise, and life style in children(M=80, f=102) of the 5th and 6th grades of elementary school. Anthropometry and multifrequency bioelectrical impedance analysis were conducted to estimate body composition. Dietary intake, exercise, and life style were determined by using . When obesity was classified greater than 120% of the ideal body weight, the prevalence rates of obesity were 31.2% for boy and 20.6% for girl. There were significant differences in body composition between nonobese(NO) and obese(OB) groups. Mean fat mass(FM) and lean body mass(LBM) were 8.6 kg and 27.7 kg for NO group and 16.7 kg and 32.3 kg for OB group, respectively. Also a significant difference was found in hydration rate(TBW/body weight)between groups(<0.01). No significant difference was found I total calorie intake and nutrient intakes between groups. No difference was found in the frequency and duration of outdoor exercise and indoor activities. Mean sleeping hours was 8-9hours for 62% of nonobese children and for 59% of obese children. However, calorie intake per body weight was significantly lower inobese children than in nonobese. The present study showed that significant differences existed in their body size and composition between NO and OB groups, while no differences existed in daily calorie intake, excercise, and life style. This may indicate that important obesity-promoting factors of early onset obesity may rely on other factors such as hereditary or environmental factors besides factors considered. Further studies are required to understand obesity-promoting factors in children.
Anthropometry ; Body Composition ; Body Size ; Body Weight ; Child ; Electric Impedance ; Female ; Humans ; Ideal Body Weight ; Life Style ; Male ; Obesity ; Prevalence ; Surveys and Questionnaires

OBJECTIVETo investigate the joint effect of birth weight and each of obesity measures (body mass index (BMI) and waist circumference (WC)) on abnormal glucose metabolism (including diabetes) at adulthood.

METHODSUsing the historical cohort study design and the convenience sampling method, 1 921 infants who were born in Beijing Union Medical College Hospital from June 1948 to December 1954 were selected to do the follow-up in 1995 and 2001 respectively. Through Beijing Household Registration and Management System, they were invited to participate in this study. A total of 972 subjects (627 were followed up in 1995 and 345 were followed up in 2001) with complete information on genders, age, birth weight, family history of diabetes, BMI, WC, fasting plasma glucose (FPG) and 2-hour plasma glucose (2 h PG) met the study inclusion criteria at the follow-up visits. In the data analysis, they were divided into low, normal, and high birth weight, respectively. The ANOVA and Chi-squared tests were used to compare the differences in their characteristics by birth weight group. In addition, multiple binary Logistic regression model was used to investigate the single effect of birth weight, BMI, and waist circumference on abnormal glucose metabolism at adulthood. Stratification analysis was used to investigate the joint effect of birth weight and each of obesity measures (BMI and WC) on abnormal glucose metabolism.

RESULTSThere were 972 subjects (males: 50.7%, mean age: (46.0±2.2) years) included in the final data analysis. The 2 h PG in low birth weight group was (7.6±3.2) mmol/L , which was higher than that in normal birth weight group (6.9±2.1) mmol/L and high birth weight group (6.4±1.3) mmol/L (F=3.88, P=0.021). After adjustment for genders, age, body length, gestation age, family history of diabetes, physical activity, smoking and alcohol consumption, and duration of follow-up, subjects with overweight and obesity at adulthood had 2.73 (95% confidence interval (CI) =2.06- 3.62) times risk to develop abnormal glucose metabolism when compared with norm weight ones. Likewise, subjects with central obesity were more likely to develop abnormal glucose metabolism than ones with normal waist (odds ratio (OR)=3.35, 95%CI=2.49-4.50). In addition, compared to subjects with normal birth weight and normal BMI at adulthood, ones with normal birth weight and overweight (including obesity) at adulthood were more likely to have abnormal glucose metabolism (OR= 2.60, 95%CI=1.94-3.49); subjects with low birth weight and overweight (including obesity) at adulthood had the highest risk for abnormal glucose metabolism (OR=4.70, 95% CI=1.84- 11.99). The attributable proportion of interaction between low birth weight and overweight (including obesity) at adulthood was 48.5%. In addition, compared to subjects with normal birth weight and normal WC at adulthood, one with normal birth weight and central obesity at adulthood were more likely to have abnormal glucose metabolism (OR=3.18, 95% CI=2.33- 4.32); subjects with low birth weight and central obesity at adulthood had the highest risk for abnormal glucose metabolism (OR=4.78, 95% CI=2.01- 11.38); subjects with high birth weight and central at adulthood also had high risk for abnormal glucose metabolism (OR=4.35, 95%CI=1.38- 13.65). We found that the attributable proportion of interaction between low birth weight and central obesity at adulthood was 38.5% , and was 28.3% for interaction between high weight and central obesity.

CONCLUSIONThere was strong interaction effect between birth weight and overweight (especially central obesity) at adulthood on abnormal glucose metabolism at adulthood. Effective measures should be adopted to prevent and control adult obesity in order to offset the adverse effect of birth weight on long-term health risk.

Adult ; Birth Weight ; Blood Glucose ; analysis ; Body Height ; Body Mass Index ; Cohort Studies ; Female ; Glucose ; metabolism ; Humans ; Male ; Middle Aged ; Obesity ; epidemiology ; Obesity, Abdominal ; epidemiology ; Odds Ratio ; Overweight ; epidemiology ; Waist Circumference

Objective: To investigate the associations of obesity and physical activity with cognition in the elderly. Methods: A cross-sectional survey was conducted from October 2009 to June 2010 among people aged ≥50 years selected through multistage random cluster sampling in Shanghai. The subjects' body weight, body height, waist circumference and hip circumference were measured to calculate body mass index (BMI) and waist-hip ratio (WHR), and the data on self-reported physical activity level were collected through questionnaire survey. A comprehensive battery of cognitive tests was conducted to assess subjects' cognitive functions, including verbal recall, forward digit span (FDS), backward digit span (BDS), and verbal fluency (VF). General linear model was used to examine the associations of BMI, WHR and physical activity with cognition. Results: A total of 7 913 participants were included, with a median age of 60 years. Age, sex, education level, income level, BMI, WHR and physical activity level were significantly associated with cognitive scores in univariate analysis. After adjusted for age, sex, education level and income level, BMI was no longer significantly associated with cognitive scores in all cognitive functions (all P>0.01). WHR was significantly associated with VF score (P<0.01). Abdominally obese participants had lower VF score than non-abdominally obese participants (P<0.01). Physical activity level was significantly associated with all cognitive functions (P<0.01). Compared with participants with moderate physical activity level, participants with low physical activity level had lower scores in all cognitive functions (P<0.01). Conclusion: Abdominal obesity and low physical activity level were negatively associated with cognition level in the elderly, suggesting that waist circumference control and physical activity might help maintain cognition in the elderly.
Aged ; Body Height ; Body Mass Index ; Body Weight ; China ; Cognition/physiology* ; Cross-Sectional Studies ; Exercise ; Humans ; Middle Aged ; Obesity ; Surveys and Questionnaires ; Waist Circumference ; Waist-Hip Ratio

It has been known for a long time that elevated blood pressure (BP) in the young may persist and progress into adult hypertension (HTN). Multiple studies have revealed the predicted BP trajectory lines starting from childhood and related them to later cardiovascular (CV) risks in adulthood. As a small baby grows into a tall adult, BP will also naturally increase. Among early-life predictors of adult HTN, birth history, such as prematurity, and low birth weight have been popular subjects in research on pediatric HTN, because body size at birth has been reported to be inversely related to the risk of adulthood HTN. The hypothesis of HTN in prematurely born adolescents has been postulated as a physiological predisposition to postnatal excessive weight gain. Current body weight is a well-known independent predictor of HTN in children, and some studies showed that children demonstrating upward crossing of their weight percentiles while growing into adolescents have significantly increased risk for elevated BP later in life. Recently, reports focused on the adverse effect of excessive catch-up growth in this population are gradually drawing attention. Accordingly, children born prematurely or with intrauterine growth restriction who show rapid changes in their weight percentile should be under surveillance with BP monitoring. Prevention of childhood obesity, along with special care for premature infants or infants small for their gestational age, by providing healthy nutritional guidelines should be cardinal strategies for the prevention of adult HTN and CV risks later in life.
Adolescent ; Adult ; Blood Pressure ; Body Size ; Body Weight ; Child ; Gestational Age ; Humans ; Hypertension ; Infant ; Infant, Low Birth Weight ; Infant, Newborn ; Infant, Premature ; Parturition ; Pediatric Obesity ; Reproductive History ; Weight Gain

This study was performed to investigate body image perceptions of women about themselves and their preschool children and also to investigate the relationship between these perceptions. Subjects were 545 women and their children (279 boys and 268 girls) residing in Daejeon city. 67.7% of women were classified as normal group, 18.6% as overweight group, and 13.8% as underweight group by BMI. 68.5% and 78.7% of their boys and girls, respectively, were classified as normal group, 22.4% and 16.4% as overweight group, 9.1% and 4.9% as underweight group by WLI. Women made relatively accurate judgments on their current body sizes and selected their body images as the most desirable one. But they preferred plumper figures for their children and failed to perceive their overweight children as overweight. While 74.7% of women wished to be thinner, 81.1% of them wished their children to be fatter. Women spending less then 100 thousand won and more than 500 thousand won as monthly food expenses and having only one child perceived their children's current body sizes the lowest and the highest, respectively. Women wished boys to be fatter than girls. Their current body sizes were correlated positively with the children's current body size (p<.01), and their healthiest, attractive, and 'wish' figures were correlated positively with children's current, healthiest, attractive, and 'wish' figures (p<.05 - p<.01). Body size dissatisfaction (wish to be thinner) and BMI of women were correlated negatively with children's healthiest and attractive figures (p<.01). These findings suggest that in order to correct the women's body image misperceptions and to prevent childhood obesity, mother's perception about healthy body images for themselves and their children need to be included in nutrition education. Also, it is necessary to assist mothers to understand the relationship of body size and weight status with the risk of chronic disease which might appear later in their children's life.
Body Image* ; Body Size ; Child ; Child, Preschool* ; Chronic Disease ; Education ; Female ; Humans ; Judgment ; Mothers ; Overweight ; Pediatric Obesity ; Thinness

To contribute to promotion of health and preservation of labor power of Korean laborers, the body height and body weight were measured for 10,407 workers (6,201 male, 4,206 female) in the age group of 20-29, engaged in manufactures in the Gumi industrial complex, Gumi city, Kyungpook province. The above data were extracted from the 1985 periodic examination chart for calculation of the mean body weight, mean body height, correlation coefficient and regression equation between weight and height, standard body weight, body mass index(BMI) and distribution of laborers within Garrow's classification of BMI by age and sex group. Mean body height of 20-29 age group was 168.2+/-5.61 cm for male and 155.9+/-5.26 cm for female. Mean body weight of 20-29 age group was 61.4+/-6.56 kg for male and 52.4+/-6.00 kg for female. Correlation coefficient and regression equation of 20-29 age group were +0.541 and Y(Wt)=0.632X(Ht)-44.975 for male and +0.559 and Y(Wt)=0.637X(Ht)-46.898 for female. Standard body weight of 20-29 age group was 53.0kg at 155cm, 59.3kg at 165cm, 65.6kg at 175cm for male and 51.8kg at 155cm, 58.2kg at 165cm, 64.6kg at 175 cm for female. Range of normal body weight of 20-29 age group was 47.5+/-58.5kg at 155cm, 53.8+/-64.8kg at 165cm, 60.1+/-72.1kg at 175cm for male and 46.9+/-56.8kg at 155cm, 53.2+/-63.2kg at 165cm, 59.6+/-69.6 kg at 175 cm for female. Range of obesity of 20-29 age group was 64.1kg and over at 155cm, 70.3kg and over at 165cm, 76.7kg and over at 175cm for male and 61.8kg and over at 155cm, 68.2kg and over at 165cm, 74.5kg and over at 175 cm for female. Body mass index (kg/m2) of 20-29 age group was 21.7+/-1.95 for male and 21.6+/-2.05 for female, 75.9% of male laborers and 71.3% of famale counterparts fall in the desirable range of BMI by Garrow's classification.
Body Height ; Body Mass Index ; Body Weight* ; Classification ; Female ; Gyeongsangbuk-do ; Health Promotion ; Humans ; Ideal Body Weight ; Male ; Obesity

Among current health-related issues, obesity is considered one of the foremost, and the importance of this subject has fostered a national interest in body weight loss. In this study, the differences in recognition of body weight loss according to age and gender are investigated. The subjects of the study were 720 (male: 360 and female: 360) aged between 10 - 60 years, who had experienced to try body weight loss during 6 months prior to this study. Anthropometrics, general characteristics, personal reasons for body weight loss, comprehension of body weight loss, and a knowledge of diet-related issues were assessed through a questionnaire. The anthropometric measurements showed significant differences in height, body weight (present and desired) and BMI (p < 0.05) by age and gender. The difference between desired body weight and actual body weight was greater for younger subjects or female, regardless of whether they had under- or normal body weight (p < 0.05). Reasons for body weight loss varied; younger subjects and female tended to lose body weight "to enhance their appearances", whereas the older subjects and male desired "to improve their health" (p < 0.05). Subjects had different concepts concerning body weight loss; younger subjects and female considered body weight loss as "maintenance of a slender figure, or becoming more lean". On the other hand, older subjects and male thought body weight loss to be "effects approaching normal body weight" (p < 0.05). From our studies, it can be concluded that attitude on concerning body weight loss varied according to a age and gender. Thus, consideration of this individual differences would be vital in developing contents of a particular nutritional education program for body weight loss.
Body Height ; Body Weight* ; Comprehension ; Education ; Female ; Hand ; Humans ; Ideal Body Weight ; Individuality ; Male ; Obesity ; Surveys and Questionnaires

BACKGROUND AND OBJECTIVES: The left ventricular mass is known to be influenced by both hemodynamic and non-hemodynamic factors. Body size and gender are the most representative non-hemodynamic factors. This study was performed to establish the influences of these variables on the variation of the left ventricular mass in healthy Korean adults. SUBJECTS AND METHODS: 368 subjects (male=184, female=184), with a normal body mass index and blood pressure, were included in the echocardiographic analysis from the echocardiography database of the Hanyang University Hospital and of the Yangpyung Epidemiologic Survey 2004. The left ventricular mass was calculated using the equation: 1.04x(IVSd+LVDd+PWTd)3-LDVs3)x0.8+0.6. The stroke volume was calculated (mL/beat) using Teichholz's formula. The stroke work (SW in gram-meters/beat [g-m/beat]) was computed as the cuff systolic BPxstroke volumex0.0144. RESULTS: The stroke work (SW) was the most important factor associated with the LV mass (adjusted R2=0.501, p<0.001), and body weight, age and gender were independent factors (adjusted R2=0.642). In a regression model, including stroke work, gender and height2.7, the LV mass was predicted by the equation: 54.9+7.62xheight (m2.7)+0.67xSW (g-m/beat)-13.2xgender (male=1, female=2)(constant=54.9+/-14.7 g, adjusted R2=0.576, SEE=21.67, p=0.001). CONCLUSION: As with the studies in the western countries, the stroke work, gender and height2.7 were important determinants of the left ventricular mass in Korean adults with a normal weight and normal blood pressure.
Adult* ; Blood Pressure* ; Body Mass Index ; Body Size* ; Body Weight ; Echocardiography ; Hemodynamics ; Humans ; Hypertrophy, Left Ventricular ; Ideal Body Weight* ; Stroke ; Stroke Volume